Duplicating machine



Aug 23 1932- J. J. FLANIGAN 1,872,719

DUPLICATING MACHINE Filed March 5, 1929 7 Sheets-Sheet 1 llg- 23, 1932 J. J. FLANIGAN DUPLICATING MACHINE Filed March 5. 1929 7 Sheets-Sheet 2 Aug; 23, 3.932. J. J. FLANIGAN DUPLICATING MACHINE Filed March 5. 1929 F/vsnee's-Sheet 5 mx h r llliL. NS

Aug. 23, 1932. J. J. FLANIGAN DUPLICATING MACHINE Filed March 5, 1929 7 Sheets-Sheet 4 Aug. 23, 1932. J. J. FLANIGAN DUPLICATING MACHINE 7 Sheets-Sheet 5 Sw N N2 Sw @QN @EN mmm@ Nm Filed March 5, 1929 lll, 1

Aug. 23 1932. 1, FLANIGAN 1,872,719'

DUPLICATING MACHINE Filed March 5, 1929 '7 Sheets-Sheet 6 Aug.. 23, 1932.' J. J. FLANHGAN DUPLICATING MACHINE 7 Sheets-Sheet 7 Filed March 5. 1929 Patented Aug. 23, 1932 UNITED STAT-s l'OHN-J. FLANIGAN, OF OAK PAR-K, ILLINOIS, ASSIGNOR TO-VIVID, INCORPORATED, OF.'

PATENT i oFFLcE CHIGAGO,` ILLINOIS, A CORPORATION F ILLINOIS DUPLICATING MACHINE My invention relates vto duplicating ma! chines and moreparticularly to the 'type of duplicating machine which employs a gelatin band on 'which' an original imprint is first made and from which multiple impressionsl A primary object of the invention is to con-l trol the operation the platen roller in a novel manner to insure perfectregi'stration of the sheet `for receiving` the impression'from the imprint on the band.

' Another. object is to uniformly moisten the gelatin'ban'd as it is re-'wound upon its spindle. `#Another object is to provide a machine which is especially'eifective in handling a wide range of sheet sizes from large sheets to small Vstiff sheets such as postal cards.

A further object is vto improve the vconveyor and its operating, mechanism which carries ther rolls of gelatin `bands whereby the rolls .may be successively brought into operative4 position easily and' without shock or. liability of damage to themselves or to the mechanism.

A further object is to provide a structure in which the gelatin band maybe properly vand uniformly stretched on the printing bed and in which the Atension on the band c an be released' before the partsare unlocked for the purpose of advancingv kthe band.

Another Objectis to provide .a :light-Weight platencarriage requiring .very little effort to move it' back and forth" through impression position, which can be operated as fast as the operator desires and which will be noiseless in operation, require very little lu' bricati on, and will not bind in its guides.

- And a further object is to provide a duplicating machine of this charactervwhich will be simple, durable and reliable in construction and highly eflic'ient operation..

Application filed Marcha,

1929. `serial No. 344,203.

The accompanying drawings illustrating oneembodiment of the invention, 1

Fig. l is a side'elevationof the machine;

' Fig. 2 is a plan sectional view on the line' Fig. 3 is an enlarged top plan view of the platencarriage and a portionv centframe; Y

` Figs. 4, 5 and 6 are enlarged vsectional views of the platen carriage'and the bed of of the adjathe machine taken on line 4--4 of Fig. 3,

showing the platen carriage in different positions Fig. 6a is a detail section on the line 6a 6a of Fig. `3;

Fig. 7 isA an enlarged detail section of the front reel and driving mechanism on the line 7 7 of Fig. l;

23 line 8 8 of Fig. 7 'f Fig." 9 is a det-ail section on the line 9 9 of Fig. 7;

F ig. 1Q is an enlarged detail section on the line 10-10 of Fig. 3; j

Fig. 1l is an enlarged section on the line Il ll of Fig. 2;

Fig. 12 is an enlarged detail fragmentary view of the spindle. gears, showing the auto# matic stop for determining position of the rolls;

Fig. 13 is an enlarged perspective of the parts shown in Fig. l2; and

Fig. 14; is a detail section on the line 1& 14

the bed plateV frame for movement in operative relation to the bed. The main frame is preferably made up of tubular construction and embodies the legs 1the cross bars 2 and the side plates 3 which enclosethe upper portion of the main frame,'these parts being all suitably secured together to form a rigid, light-weight'structure. The conveyor B is Fim-8 is a transverse detail sectionon theA mounted in the frame below the bed plate and it comprises two endless, flexible metal bands arranged in parallel relation and spaced apart substantially the width of the 5 frame... rhese. conveyor bands travel over the idler .wheels or--pulleys 5 supported on suitable shafts 6 journaled in the main frame. The upper wheels 7 for the conveyor bandsare keyed'lonta v transverse drive shaft 10 8 which is provided:with.peripheraliteeth 9.1

engaging spaced openings l() in the conveyor bands for positively driving theconveyorr and maintaining definite registration of both conveyor bands. This driving means for'the conveyoris operated fby a hand wheel pos1- ioned just outsde-,ofthefma-in frame.V The` shaft! Saisj Ournaled in. .the .side members 3. of the. main frame,an'd.one end extends through the side member and carries thehubl'lfwhich.

movement of the conveyor. The individual.

10lls1sof.gelatin :bands are. wound .on spindles 15 spaced .at.equa l 1intervals-on the. conveyor and their ends are mounted in smallsleeve bearingssly .fastened` on the conveyori bands.

The spindles carry smallgearsfll at their corresppnding ends Whichengagea gear 45 located in the operating position ofthe rolls.

fortdrvingtbe rollspas hereinafter. described.l

Just underneath and insider of the upperedgesmof the side. members 3.are. brackets 17 in. Figs.. .1., .12v and.13,:and Vwhich carry pawls onlatches 18.. pivotedv .at A19.130. theirrespectlve bracltsf..

These latches are positioned in the pathof thespi-ndlebearings 16. on'the conveyor bands and are yieldinglyfpressedi downwardlyby.

the springS: 20- positionedbetween the latches and the tops of the bracket. The latches'areV located .in .the-main frame. just. at the. rear end ofthebedzplateframe C, and theydeter.-

mine. the foperating position. for... the gelatin rolls -.on thefconveyor. The 'latches haveY on. theirunder `edges V-sha-ped notches 21 whichv The edges22V of..,the...notches are. ysufiiciently vertical to form. stQps-.againstthe spindle. bearings 16 to prevent theconveyor frombeing moved inl l The cam edges 23 of the engage ,the `spilfidle sleeves, 16.

areverse direction. notchesare. angled suliicientlyto vpermit the sleeves toraisethe latchesl and allow the spindlessto .ride loutJof; the notches .and pass the latches; vIprefento arrange thestructure iny thismannerso thatthe conveyor kwill have` freev movement 4inqthe, one vdirect-ion.. TheV conveyor with a large number of rolls is. comwhich are bolted to the mainframe, as shown.

paratively heavy and stores up considerable momentum when operated to bring a roll into position. If it were stopped suddenly it would receive quite a shock which might result in damage. mitted'to rotate the conveyor until .the roll passes the'latches he wllthen stop the conveyor gradually simply by ceasing to furtheizoperatefit; ;He thcnireversesrthefmovef ment ofitheconveyorxuntil it is stopped by the notch abutment 22 and thus avoids a -shocleoIr-the entire conveyor mechanism. The

forward ends 24 of 'the latches are beveled sullcientlyso'that--inrthe event the spindles pass .the`` endsQl ,ther `reverse lmovement. of the conveyorfwilll' cause .th`e.`lat"ches to `ride upon .the spindles'leeves.. The operator can tell vby fthe.. click` of .the L latches Vwhen hehasf reached the point forreversingjhe movement oftheconveyol;

In a machineo'fi-tliisltype the/.freeendfof' the. lvgela-tin .band 14.1 of L the.' particular.. roll-s which has. been placedfin .operating pbsitiom as previously described,l .is broughtmp over; the rear. end.. of fthe.. bed platey forwardly; along saidbedplate totlierontndwtlereofg.. and .then .downwardly .Whereit 'sconneeted. to a permanentwindng Aor..talm-np .reel;2 6..

The free end l of, ,the lbandllis ,provided`..with

any suitable clipto,engage ..a'zhook,27on the... wndingyreeh. iThe winding. reel., .is`` posi: tioned in the. .extreme ffor'lwardf end lof lthef main frame between. the. side. mem-bersf,

But if the operator is perthereof and be1o.W:..th e end ofgthebedplate frame. This .reel is preferably. tubular: and.`

it ,is mounted.on...adrive slraft28 havinggbear ings .29..nethe side..memberscfthe main. frame. The shaft has .ahand :WheelBD .fas- .l

tened `at one, of .itscnds .which extendsstothe;

outside of .the mainframe, qandmheoperating wheel r has suitable'. crank' handle. 31. for. the.l operator. As; shown V.Inore..clea.rlytn. Figs. 7, S and ..9=, ythe. 'reel is. freely, rotatable on the .shaft 28nb11t.. it-.is .supported .thereon by ahollow .plug memben 281. whiclrhas .'a. bearing 32 keyedtherein'but free-.onthesliaft-.-

This bearing forms onemember ofL-alcl-utch and is provided .withteeth 32' 'Wh'i'ch lare `en-v gaged by .corresponding teeth 33"."on one endv of a'clutch member? The 'clutch-memberl 33 is mountedion Vthe shaft "and "is' .shiftablef longitudir'lallythereofl Theseclutch'- mem-v bers Y 32, 33, when- -engaged 4connectl thereelr'td ative -tof rotate. 'the ree-land wind the gelatin-i bandi-thereon.- l'lhe'fY-clut'ch memberl 3'3iis'V movedsinto fand: out ofiengagement .with the '1 member 32:b.y means ofia'pin andsloticonneoel tion withtheshaft. Asishownr'in EigszLTand': 9, the shaft carries agpinaywhich .operates n .anfangularlyf disposedfslot 35 in tha clutch member. 33 lto shi-ft; thechltch mernberflong-gftudinally. of theshaft, VVto the ,right Fig.` 7 when the. shaft isrotatedi. Sincetheclutcb member 33 is rotatable with the shaft it is 'rifa estV provided with a suitable'weight36 tendingv to retard its rotation and thus insure a relative movement between.V the 'shaft and the clutch member. Hence when the shaft is rotated in the direction to wind :the band upon the reel theY movement of theshaft causes the clutch member to shift into engagement with the reel member and connectr the reel to the shaft. The reverse rotation of the .shaft will Shift the .clutch member out of engagement with the reeland thereby release the reel so that it will be free to rotate in the reverse direction whenrthe gelatin band is rewound upon its spindle at the rear of the machine. A bevel gear 37 Fig. 7 is loosely mounted on the drive-shaft adjacent the bearing 29 and its hub extends into the' l the clutch member 33 is shifted into engagement with the gearV to theleft Fig. 7, and connects the gear with thel drive shaft. The gear 37 meshes with bevel gear 40 which is keyed on the end of a long shaft41.v The forward end of this shaft has a bearing 42 in the bearing member 29. The shaft eX- tendsrto the rear end of the frame and is mounted in a bearing member 41 fastened to the main frame. Y This shaft has abevel gear 43 adjacent said bearing 41' Figs. 1,'2,

and 12 which drives a bevel gear 444 on one end of` a short shaft 44 in saidbearing mem#v ber 41 Figs. 2 and 12. e The other end of this short shaft has the small gear 45 previouslyV mentioned which is ,positioned underneath the conveyor band in the path of thegspindle gears 15 for the individual'rolls. When a roll is brought into operating position by the conveyor, as previously described, this spindle gear 15 is brought into meshing relation with the driving` gear 45 andestablishes driving connection between the shaft 41 and the spindle. shaft 28 is reversely rotated by the hand wheel the gears and shaft 41 are automati# cally connected to said drive shaft bythe clutch member 33, and this motion is transmitted by the shaft 41 to the spindle in a di# rection to rewind the gelatin band upon said roll. y Y

In the operation of the machine after the gelatin band roll'has been moved into position by the conveyor and the end ofthe band is stretched over the bed plate and connected to the reel 26, the reel isrotated in a direction to wind the band thereupon for the purpose of presenting successive portions of the gela- Thus when the drive true that this roll isconnected to and drivesl l the Vshaft 41 and the gears 40 and' 37 i at the, forward end ofthe machine, but these are alsol free to rotate since the clutch member 33 is at this time in the Vposition which Vcon-y nects the reell to the-drive shaft.

It is desirablev to stretch the band tau upon the bed plate and to lock the rolland reel against rotation so asto eliminate any Vdanger of disturbing the band during 'the printing operation. For the' purpose of t# holding the roll against rotation I provide a brake on the shaft 41 adjacent its forward end. This brake consists( of a drum 50 keyed on the shaftand a brake band 5 1 adapted to grip the drum and hold the shaft against rotation. As shown more clearly in Figs. 7 and 8' the brake band surrounds thedrum 50 and its end portions 52 arevturned upwardly in substantially parallel relation. A shaft member 53 is mounted in 'bearings 54 in the frame member 3 .and extends through transverse holes inthe brake band ends 52. This shaft carries a pin 55 which acts on aebeveled cam block 56 adjacent one ofthe ends 52 of the brake band.: The shaft has a collar 57 tov hold the other member 52 of the brake band. The rotation of this shaft operating on the cam 56 forces the two 'ends 52 .of the.

band towards each other and causes the band' A suitable ,hand

to grip the brake drum. lever 458 on the outside of the main frame is provided for the operator. A coil spring 53 is anchored at one end to the frame, and its other endhas a loop through which the shaftv 53vpa-sses, the tension on the spring being suliiclent to frictionally hold they shaft in the position to which it is rotated.r The inner end 0f the shaft53 has a pawl 59 pivotally mounted thereon and the end of this pawl engages the teeth of a ratchet wheel 66 on the endV of the reel 26. When the-pawl is in engagement with the ratchet wheel the reel will be locked against lreverse rotation. After'` the operator has wound a fresh portion'of the gelatin band into impression position on the bed he throws the hand lever 58 upwardlyy and operates the brake to lockfthe shaft 41.y

This locks the roll against vfurther rotation.

The winding reel at the forward end, how;v

ever, is still free to continue turningv in a winding direction and the operator may thereby apply whatever tension on the band he del! sires for the imprinting and impression op#v engages a pin 62 carried by the pawl itself. It is preferable to relieve the tension uponA the band first, and thereby relieve any binding action on thegpawl, beforethe pawl is lifted out of engagement with the ratchet.

For this reason the pin 61 is so positioned` on;

'ntil "the brake i band :opens and releases the shaft-411i -Theiitens'ononffthe gelatin'f'band are free.

positioned at-Jthe forward end of the will their slightly- -rotatef the roll and shaft 41fu`ntil -th ltension-is relieved andi the Iparts Frther movement offthe'han-d le` verLSlwill then lift' the pawl out offengagenientwiththe ratchet and restore the parts tocondltion where the winding lreel may 1 agaiiilbef operated? to Wind-a fresh'portio'nv of* theifband into impression position.

The'bedlfr'anie; as before mentioned,`y is positioned at vvthe top -of `the finain iframe. -It hasadinrizontally' disposed bed plate 65 and twofvertieily? dis vose'd4 lside members (fhaving' 01utsta-nding1- anges' at their lower edf'fe's whiehiarel secu-red to the upper edgesof-'the mainfframeihymeans ofthebolts 67'.' Oil the-upper-sidetof 'the bedplatefisY a fabric faeing-TO formi-nga suitable supporting sur-- faoeffforthegelatiny band." At 'each 'endl o'f the 3bedfplatefis' 'aitranswrerse roller-171' over whih 'the gelatin'band travels'. f

Arrend-*marg'in 'barframe, Figs. 3'-6,-is` bed platea` This'margi'n bar iframe has a cross 1511572 extending acrosslthebed plate "frame atx-the forward end thereof ust belowv the p plnef'of' the flied-plate; At its-ends' this transverse-"bar-*hasItwo side Vbars 72- positio'ned alongf the inside faces-ofthe side members 66'fof 'the bedp'late framejust: undemeath: the bed plate. This marginy -bar frame,- as `V`indicated in -dotted'line'sin Fig.

' 3;is1horizontally slidable .towardsand from thelfrontend of the bedplate. It is supportedffo thispurpose fon headed studs 7 3 instanding fromthe side members 66.14 The lowered'ges :of the frame are provided twith notches `74,' Fig.- 4, for* engagement with' the studs'fito'fholdfthe margin v'bar framevrii'i either itsfnormal position forgits extended posi-tion;- vTheL 'fra-me may' ybe shifted Sto either position bysimply-'raising the outer I, end slightly until thenotches 4llclear the studsyan'dlthen sliding the frameA in 'either d-irection'-A The Cross lbar'carries anl L- shaped nember 75 fastene'dthereto bymeans of screws 76'-, vtheholes through which the screwspass beingllarger in diameter-than the ser'eWs'fsthat V21g-he margin *bar may be rad# onits'fframe- Thei upstandingf pori tion 'of ",thlemember iecarries 'thef 'en'dinar-` gin or) gauge iba-il-LTT This bar is likewise Lslhaped11n section and,Y as shown m Figs. '4,1

5 Aand-'565, is mounted with l its horizontal l`-p'ortion slightly Vbe'lowlthe'plane ofth'e surface of the-'fgelativr' band. "Ihe margin Vbar is positioned at la'sufficient'distance frein the endof vthe bedplate "so that when ;the sheet T'S'tofbefp-rintedis inserted against the barits endf willlprojeet:beyond-the'roller 71. Ordinai'ily aj flexible sheetwill be strippedvfromtheigelatin"bax'id', afterthe :impression operation ,'1 byl the p'latenandgrip rollers inV theirK returnxtra'velgjlbrit? ther printed sheet; may ybe removedib'yff grasping 'thexforw'ardf edgey wh-ichfprojeotsv` beyond the roller 4'71 .into the margin-barili The-margin bariis `first extend-- edf'io'r pulledoutwardtogive easyaccesszto ris:mo'unt'edfto fmove back-and'forth above the fbed pla-tel Iin operative relation thereto.

This 'e'arr-iagecomprises-a fiat'bar 8O extending 'cros'swis'e of the bed plate. at a def#V initedistanee" yabove the :gelatin-band with its"l lends 81 turnedidown to i overhangi the edges of tliebedplat'e, Figsll; 10. One of these? do'wntu d ends Carries Ia forwardly extendingbra `ret'plate 82,' Fig.' 1, which'has guide-rollers 5813 --mounted" thereon. One of these" vrollersfi-s' positioned "to travel ialong traekway" orm'ed vbyLthe upper 'surface of Ian outstanding'angeqiorf ledge 84 of the bed plate frame, fand? the! other roller is positioned lto"en-g'age:.th'el. opposite vunder surface of this"Harige?"ThusL-the carriage is held againstf-vertea-l gmove1nent with y respect to the lb'edplateffraineibut:is permitted free longitudinal lmovemen-t' thereon. The other downturh'ed 41lendlSl i' off the Carriage member 801`is"boltediitoair-elongated sleeve 85, Figs.v

3," '10J #This 'sleevelembraeesa longitudinal guide' rod 86 extending: vparallel with the bed plate iframe at one side and lunderneath the; overhangin'gfl flange 87 of'- said "frame Thel borey 1o'f1`fthe-J'sleeve'- is .larger than the guiderodand th'e''sleeve carries fat each end a pluralityof radially disposed bearing rollers 88""grouped aro'und the guide rod 85 and I riding on-sad-rodl I have foundthat by enelosingigtheguideIrod 86 A'in' a sheathing 891, ofV iberoroth'erwsuitable` material as a bearingfllsurfaee I for the!V bearing rollers 88 the noise' 4incident .f'to the movement of the sleeve along' theguide rod is'lessened and that'.nolubr'ieationv` is required' on the surface of the 'guidemodFbeeauseofthe pressure of therollrs'. This sleeve is of sufficient length to rigidly `holdfthe carriage square with'the dotted linesE in Fig; 1; This yoke carriesl a springfpressedflocking pin 9l`a'dapted to. enter the holes`=finlthelupper or lower `positions of the carriage yoke to lock the yoke in either of its positions. By means of this construction the platen and grip rollers may be swung upwardly clear of the printing surface for the purpose of enabling the platen roller to be readily cleaned and also for the purpose of enabling especially long sheets to be removed from the printing surface. The sheet feed chute, together with the carriage yoke, is bolted, as shown in Figs. 4, 5 and 6, to the carriage bar 80, and shims 96 are placedbetween these two members so that the platen roller may be adjusted vertically with respect to the gelatin band. The car-V riage yoke 91 carries a grip roller97 spaced a definite distance above the surface of the elatin band and mounted on a transverse shaft '98 which is freely rotatable in bear-` ings in said yoke. The periphery of this grip roller, as shown in Figs. 4, 5 and 6, is practically in a line extending from the inclined chute to the corner of the margin bar so thatwhen the platen roller and the grip roller are separated as shown in Fig. 4 the sheet can be freely inserted between the rollers directly against the margin bar in a substantially straight line and without bending. The platen roller 100 which also functions as a pressure feed roller is carried by a yoke or U-shaped frame 101 which is pivotally mounted on the transverse shaft 102 in the carriage yoke 91 so that the platen roller may be swung vertically toward and from the bed plate. The ends of the platen yoke have open ended cam slots 100 Figs. 4, 5, 6 and 6a disposed at an angle and in which the ends of the platen roller shaft 103 are positioned. The' platen roller is thus bodily movable in the slots but it is yieldingly held in the slots by the springs 104 which are anchored to the yoke and which bear against the platen shaft. When the platen roller yoke is swung down from up position Fig. 4 to impression position Fig. 5 the platen rollerv will yield in the slots as it passesthe grip roller, but will be held by ythe cam walls 101 of the slots 100 in constant operative engagement withthe grip roller. The rollers will thus grip the sheet between them and will curve the sheet to conform to the shape of the rollers. If the platenA roller were allowed to rotate while it is passing the grip roller the rotation thereof would be in aV direction tending to drag `the sheet away from the margin bar, `and each time a sheet were inserted and the platen roller brought into position the sheet would be dragged out of registration with the imprint on the gelatin band. To prevent this I provide a brake or drag 106 for the platen roller in the form of a curved spring. Oneend of this spring` is fastened to the platen yoke and its outer end portion yieldingly bears4 on the end of the platen roller. This brake or drag supplies sufficient pressure to prevent the rota-` tion of the platen roller while it is passing the grip roller. Holding the platen roller against rotation in this manner causes it to act on the sheet, in its bodily movement downward, in a direction to frictionally urge the sheet toward the margin bar. The platen roller, however, is relieved of brake action just before it reaches its lowered or impression position, and when the carriage is started along the printing bed away from the margin bar the platen roller will be free to rotate in Contact with the sheet and properly lay the sheet upon the gelatin band. This is accomplished by so arranging the parts that the outer end of the brake spring 10G will engage the end portion of the grip roller just before the platen roller reaches its lowered position, Fig.' 5. Continued movement of the platen roller into its filial impression position lifts the spring from the platen roller. Theplaten yoke has an upstanding handle 109, Figs. 1 and 3, in convenient position for the operator to operate the yoke and the carriage in one continuous operation.

In practice the operator moves the carriage toward the front end of the bed plate until it is brought into starting position shown in Fig. 4, swings the platen roller upwardly by means of the handle 109 and inserts a sheet of paper diagonally downward between the grip and platen rollers and into engagement with the margin bar. He then swings the platen roller downwardv into operative position, Fig. 5, and when this movement is completed further pressure on the handle starts the carriage moving away from the margin j bar. This is generally done in one quick motion. The pressure which the platen roller exerts upon the sheet is determined bythe pressure which the operator applies to the handle. The carriage yoke 91'has stop lugs 110 at its ends positioned to engage the lower edges of the platen yoke, Figs. 4, 6. These stops allo-w the platen roller to be firmly pressed upon the paper but they limit the movement of the yoke at such a point as to prevent a crushing ordestructive pressure of the roller upon the 'gelatin band. As the platen roller is swung vdownwardly it first engages the grip roller with the sheet therebetween andiinally reaches the impression position shown in Fig. 5 below the axis of the griproller and in operative relation to the gelatin band. It is necessary to maintain this engagement Vof the platen rellerwith the grip roller in order to feed the sheets to the gelatin band on the impression stroke of the carriageand also t0 strip the sheet from the band on the return stroke of the carriage.

This is accomplished by the cam action of the walls of the bearing slots 100 in the platen cam walls 101constantly bear against the 6 navajas platen roller shaft, and the downward-pressure on-lthe platen -yole by the operator constantly' urges the platen roller into operative ContactL with the' grip -r'oller and with? the gelatin ban d: `f` This cam action overcomes any tendency vlof the platen roller tol separate Yfrom the"` grip roller on thef 'impression stroke or` on t-hereturn 'stroke' of v`the carriage; which might'adversely affect-theffeieding orffstrip'- pingv ofthe'sheet.' The -angle ofthe cam slot-s permits the platen roller to'yield-v'vhen it is brought into engagement with the grip roller but causes positive pressure to be. applied to the platen roller yduring the impression and return' strokes ofthe carriage. Hence the spring 104 need be only of suificient strength to' yieldingly hold the platen roller in th ev ends of the slots while 1the :platenroller is vbeing Y moved into or out of impression position.

Vzo

A. guardv plate `1-0'6 is fastened to the platen yoke and exten ds'over the brake and prevents damage to the brake aswell as serving to prevent asheet from getting under the brake.`

lWh en'the `operatorfstarts the carriage rear- Wardly along the bed plate for the impression operation the sh eet is `fed between Ethe Aplaten and gripf rollers and laid vupon `the gelatin surface; The sheet adheresI to the;- gelatin Y band and the platenroller is'rotate'd` by contact `withtheshe'et.topless the sheet smoothly. upon the gelatin band. At the'beginning ofthe movement of thefcarriage', however,v Eig. 5, the sheet has not' sufficient area' offcontact with the gelatin band to cause it to adhere to said band,4 and to prevent the rolle-rs from dragging the sheet away frointhe margin bar beforesuiicient Contact is. madewith thev gelatin roll,Y which would destroy vregistra-- tion of the sheet Withrespect to 'the gelatin aandV I provide means forfinitiallyxinsuringv positivean d immediateV rotation of' the platen roller at'the'v instant Lthe carriage `starts on-'its impressionstroken In the structureishown in the 'drawings this means consists. of ai block af .rubber or other isuitable friction 'inateri al 107' which is 'engaged by; an extension.; 100 on the end ofithe'platenroller when itis'infits lowered positionifThis blockis carried; at the end of'a springrmembertf10815which" is fastened nto thebed' plate frame" and causes' the platen i rollerrto commence rotating :in- 'f stantlv tbe 4carriageis started in motion.'

Thisvblockis suiiiciently long to Ioverlay.) a portion of `the 'gelatin band thedirection of' movement ofthe carriageso that by the time the platen'ro'llerleaves the-block the sheet will have sufficient 'Contact vand adher-` ence with the; gelatin band to preventit'moving orshifting out of registration. It has 1ieen found in practice that regardless ofthe speed at which fthe carriage is :start-edili mo-V tion the instantinitia-l rotation-of the' platen will lholdfthe sheet v`registered 'againstthe .c margin bar. Y

I provide meansy lfor automaticallyv moisthis* trough in` position `f to i constantly,v dipl into thelwater in saidtrouigh. y1A-'second or nioistening IVrol-ler V118 is 1 arranged parallel' v'vith'the transfer roller 117 andiis rotatably mounted in ithe ends of links' 119;'the 'other ends of -which'links are pivotally connected totthe arms 120. l"The arms 120 are mounted on'the transfer roller shaft 1271.." l This Ashaft has an'upright` arm .122'at one end adjacent theside member 3 ofthe main frame. One

end of` 'a coil spring 1'23is-connected-to arm 122 and its other endis connected to an arm 124 pivotallyniounte'd in the side member fofthemain frame. `This arm is operated byy aifinger'lever125 on 'the outside ofthe main frame, and ywhenY said'lever is swung about its pivot the spring is lengthened andthe tension of the springen the arm" 121l urges the nioistening roller 118 upwardly,V maintaining'the inoistening rollerin contact with both the gelatin band roll and the transfer roller. The meistening r'oller automatically follows the varyingdiam'eter ofthe Agelatin' roll and-uniformly moistens the rentire surface Iof the gelatin band asit is wound upon its spindle. The moistening roller may if desired remain in `Contact with the gelatin roll whether itfi's bei-ngunwound froinits roll Yorf rewound upon it. It is preferablehowever,

tothrow-the inoistener into contact with 'the gelfatinroll oiilywhen-the band-is being re- Wound. I use a long coil spring I123'fso"thatthe-tensioni-oii the arm121willibe substantiall y uniform throughout'itsfrange" of'r'novenient Iand the pressure offthe nioistener r'll on the gelatin band roll will be substantially uniforinregardless of its diameter. The

nioistener roller isv preferably covered-withA felty or other 'suitable 'absorbent which-will readily absorbthe moisture from 'the transferrollery and carryit to thev gelatin band.

The ends ofthe shaft 126 of the-moistener roller project 'beyond the links 119 in positionv to engage theY notched restholders' 1'2Fwhich`L Vare securedV to the inner end wallsv of the water pan'ffig, 11. These-rest holders are positioned-'to' prevent the moist'ener roller from dropping, when the y' tension 4on the spring is relieved, t0 the bottom of the' pan which mayhave an'a'ccumulation of dirt therein. Villen the nioistener roller lis in the rest holders it'will be out of-contact with the gelatin roll. It wilh'however7 dip into the wat-eras shown in dottedlines in Fig. 11 sufficiently so thatit will car-ry water tothe gelatin roll .itthe start and-until the trans#` lio fer roller has revolvedl sufficiently *to carry' water to said moistener roller. Y

At the rear end of the machine I provide afworlr shelf for the operator, upon which the-sheets may be stacked in convenient position. rIhis shelf Figs. 1 and '14 is a flat desired. rithe other leg 133 which is relay tively short is arranged to engage the crowned end plug 134 projecting' from ythe end of an extension 135 upstanding from the vWhen thus fixed position, but by springing the frame upwardly/so that the end of the leg 133 clears the crowned plug 13e the table maybeswung to any desired position. j

The swivel connection nof leg'132 is formed Vby inserting it in an opening 136 in the upper edge of the side member 3 of the main frame and placing the 'end' of the leg over the head of the bolt 137 which fastens the frame member 3 to the upper end of 4main frame leg 1.

The extension V135 is mounted in the other rear ACorner of the main frame inthe same manner as ust described. This-construction provides a simple but eliicient mounting for i the shelf and permits the shelf and its frame to be readily dismounted for shipping purposes.

" I am aware that changes in the form, construction and arrangement of parts of my invention may be madewithout departingfrom the spiritor sacrificing the advantages of the invention and reserve tlieright to make all such changes as fairly fall within the scope of the following claims 1. ln a machine of the classdescribed the combination of a frame having a bed, a gelatin band on theV bed adapted to receive a sheet to be printed, a platen rollermovable over said sheet and adapted to be rotated by contact therewith, and a friction block on the frame at one sidev of the band and adapted to be engaged by the platen roller at oneend thereof in its initial positionfor impression travel to insure rotation of the roller when it begins its travel and thereby prevent displacement of the sheet.

2. ln a machine of the class described the combination of aframe having a bed, a gelatin band on the bed adapted to receive a sheet to be printed, a margin bar acrossthe front end ofthe bed, a platen roller movable over said sheet and adapted to be rotated by contactv therewith, an eXtensiononthe' platen roller at oner end thereof, and a friction member mounted'on the frame adjacent the mar- Ygin bar and at one end thereof and adapted to be engaged by said extension in the initial position of the platen roller for impression travel to insure rotation of the roller when it begins its travel and thereby prevent displacement of thesheet.

3. In a machine of theclass described vvthe combination ofa frame having a bed, a gelatin band on the bed, a platen roller movable along the bed, means for raising and lowering said platen roller with respect to said band, ai'spring bearing on the platen roller for retarding Athe rotation of said platen roller while it isbeing lowered, anda stop adapted to engage and release the-spring,

fromm'the platen roller as the platen roller reaches itslowered'position.

4. 'The combination ofV a frame havingl a.: i

"bed, a gelatin band on said bed, ay margin fbar adjacent one end of said bed, a carriage movable along the bed towards and from the margin bar, a platen roller mounted on 4said Vcarriageand adapted to be'raised and lowered with respect to said band, a brake/for holding the platen roller against rotation while being lowered, and means operable when the platen roll-er islowered adjacent said margin bar for imparting rotation to the platen roller upon movement of the carriage away from the margin bar.

5. The combination'of a framehaving a bed, a gelatin band on said bed, a margin bar adjacent one end of said bed, a carriage movable along theI bed towards and from the margin bar, a platen roller mounted on said carriage, means for raising and lowering the platen roller with respect' to said gelatin band, a brake for holding the platen roller against rotation while being lowered, means for releasing said brakev before the platen roller reaches Vits lowered position, and'- means engage'able by an extension on the roller operablewhen the platen roller is lowered adj acent said margin bar for imparting rotation to the platen roller upon movement carriage, 1a' transverse margin bar for the sheet to be printed at one end of the bed, side bars supporting the margin bar and slid'ably arranged on the frame, said side bars having notches therein, and studs on the fr ame en gaging said notches vto retain the margin bar in sheet receiving position.

'7. The combination of a frame having a supporting bed and a gelatin band thereon, a movable carriage, va margin bar at the front of the bed, a platen roller on said carriage adaptedto be moved to a position beyondtheend of the bed to overlie the margin bar, and a. yielding friction member onthe frame at one side of the gelatin band to ven ..gagean'd-notate-.the platenivhenthe,carriage 14. .Thecombination-.oa framehavingfa moves.

.Theeombi-nationof .ai mainframe hav- .iiIg-.a bed anda. gelatin-.band thereon, aV yoke ppivotally.. 'mountedv above the bed, a relatively fixed grip roller, f a platen`- roller movably ...mountedA on` saidyole, v.and cam. means f for holding .said platen.` rol-lerv in operative :relasaidgrip .roller when the yoke .ris swung downward to ricarry. the.v platen roller `ito.impression...position. .f9....T-he combinationof a main frame having .atedv anda gelatin band thereon, a. carriage ,arranged to travelabove the'bed, ay relatively f5 .tinxedgrip rollerand. a. movable platen roller Supported on the carriage, camineansassociated with said platenroller, and-manually .operated means cooperating. .with said cam .means for .maintaining the platenroller 1n .operative relation to the .grip roller-'during .the travel vofthe carriage through impression position. .y

.10. v.The combination. of. aH frame having a .bedlandfapgelatin #band thereon, a carriage ,adapted totravel .along said bed, .arelatively ffxedgrip rollerV on saidV carriage,. a platen vrellena .movable member on saidcarriage .supporting the `platen roller, and: cams actusaidmember forforcin'g theplaten roller into Yoperative.relation withthe grip .roller .during athe travel vof the. carriage .throughimpressionz position. y

l11. .'Thecombi'nati-on of a'frame having a bed anda gelatin band. thereon,.a. carriage,.a vfynke pivoted onthe carriage,.said1carriage being. 'movable above said bed by manual presurexapplied by theoperator onthe yoke, aarelatively fixedgrip roller anda movable platen roller onsaid. carriage, `and means operated bythe pressureon theyoke for maintjningthe. platenroller in operative relation to..the,grip. roller and the gelatinband asthe carriagetravels.-through. impression position. .12..1The combination. of `a Vframe'. having a bedand .a gelatin band thereon.a carriage adapted. to travel abovesaid. bed, a. relatively fixedL grip roller onsaidcarria-ge, a yoke pivoterl .on saidearriage,means rorapplying pressuretothe yoke to move the carriage, a.

movable platen rollerinsaid yoke, and camV means operatedf by the pressure on the-yoke V-for maintaining; the platen roller in operative relation tothe grip roller and the gelatin band" during the travel of the carriage through impression position.

131 'The combination ofv a. mainframe having a bed and a. gelatin band thereon,ayolie pivotally mounted above the bed, a. relatively fixed-grip roller, said-yoke having slots there- 1in-and said slots being arranged to form cams,1and a movable platen rolflerrmounte'd` in saidcamslots and xheld thereby inoperative rlationflto said grip rollerwhen .the yoke is swung to ,carrythe platen roller to impression position.

bed and a gelatin-bandthereon,a carriagearranged totravel .above the. bed, -a relatively lfixed. grip roller.- onthe carriage, aiyoke pivotally mounted :on the carriage, said ryoke having :slots therenand saidI slot-s beingar- .rangedto form Cams, Vand a rmovable. platen roller .mounted infsaid cam slots and-held therebyin operative relation to said-.grip

rollerwvhile the 'carriage is travelingthrough impression posit-ion.

15. The combination. of a-bed,a. carriage movable along said bed, a platen roller, fa yoke pivoted onrsaid carriage tol swing-.to-

.xvardsand tromthebed` an'd havingI bear-1 ing slots disposed-angularly .With respect to the line of movement of the carriage' .When v.the'yoke vis in lowered position, saidA bearing slots .acting asy cams toI force the platen. roller toivards the-bed as the carriage moves, .and .springs lyieldingly holding the' plateny inthe ends. of. said .slots lvvhen". the yoke is swung avvayfrom the bed.

.16. `The combination of a tramefa bed, a Windingreel 'atoneend of said bed,a conveyor in said frame. carr-ying'afrplurality of gelatin band. rolls and adapted tofbringfthe rolls intoV operative position atthe other end of. the bed,-the. band of the roll inoperative .position beingadapted to be stretched over .the bed Vandeonnected to said reel,driving means for operating said reel to Wind the band thereon, vand ra shaft extending to said positioned roll .and operated by said driving meansfor actuating the positioned roll to re- Wind'y the' band thereon.

:1T jThe combination of a. frame, a bed, a Wmdin-greel .at one endof-saidbed, acon- Kveyor in .said 'frame carrying a plurality `of vgelatin band-rolls and adapted to bring the rolls into operative position'at' the other end ofthebed, theband. of the rollin operative position being. adapted to be stretchedover the bed and connected to said reel, means common` to :boththe positioned roll-.and the reel `for windingthe band tromone to the other,.a shattentending:from said common -means to saidpositioned r.oll,=and means for operatively= connecting said common means to' or disconnecting itfrom. vsaid reel or said shaft. Y

18.'.The combination of a frame, a bed, a Winding reel. at .one end of lsaid bed, a con'- veyorin said-frame carrying: aplurality of gelatin band. rolls and :adapted-.to bring` the rolls into `operative position at. the .other end of the bed, the band of the rolliin operative position. being. adaptedto be istretched over the .bed and connected to said v-reel,.means.for drivingeither the positioned roll orrthefreel to Windithe .band from one to the other, and means for operatively connecting said driving meansto the one Aand''disconnecting-it from. the. other.

195111 a:.machine ofthe Vclass described, the. combination* oa gelatin band roll, means for winding and unwinding the roll thereby varying its diameter, a liquid container below said roll, a transfer roller revoluble in the liquid, a moistening roller, and means yieldingly maintaining said moistening roller in contact with the gelatin roll and the transfer roller.

20. ln a machine of the class described, the combination of a gelatin band roll, means for winding and unwinding the roll thereby varying its diameter, a liquid container below said roll, a transfer roller revoluble in the liquid, a moistening roller, means yieldingly maintaining' said moistening roller in contact with the gelatin roll and the transfer roller, means operable at a distance for releasing the moistening roller from contactwith the gelatin band, and means supporting said moistening roller` out of contact with the gelatin roll in the container when itis released.

21. The combination of a frame, a printing bed, a. conveyor, a plurality of gelatin band rolls carried by said conveyor, means for operating said conveyor in one direction to bring said rolls individually into operative position relative to said bed, and a latch on the frame arranged in the path of the conveyor and adapted to lock the conveyor with a roll in operative position, said latch permit-, ting the conveyor to overrun and also permit-y ting reverse movement of the conveyor to setthe roll in operative position.

22. rl`he combination of a frame, a printing bed, a conveyor having a plurality of spindles thereon, gelatin band rolls on said spindles, an operating shaft in said frame, a gear on each spindle adapted to be brought into driving relation to said shaft when its roll is arranged in operative position, and means for driving` said shaft.

23. The combination of a frame, a bed, a conveyor in said frame carrying a plurality of gelatin band rolls, means for moving said conveyor whereby the rolls thereon .are sequentially moved into an operating position so that the gelatin band of the roll at operating position may be directed over the bed to provide an impression surface, and means for positioning said rolls in said operative position including members having stop shoulders thereon whereby a roll may be moved past said members and then moved in the reverse direction to engage said stop shoulders to be positioned in said operating position.

24:. The combination of a frame, a bed, a conveyor in said frame carrying a plurality of gelatin band rolls, means for moving said conveyor whereby the rolls thereon are sequentially moved into an operating position so that the gelatin band of the roll at operating position may be directed over the bed to provide an impression surface, pivotally mounted pawls having tapered surfaces thereon whereby as said rolls move into operating positionY said pawls may be cammed f upwardly by engagement of said rolls withmay be moved in the opposite direction to engage said stop shoulders to be accurately positioned in operating position. v

25.V The combination of a frame, a bed, a conveyor in said frame carrying a plurality ofA gelatin band rolls wound on spindles,

means `for imparting. movement to said con-` veyor whereby said gelatin band rolls may be sequentially moved into and through an.

operating position, the gelatin band of the roll at operating position being withdrawn therefrom and directed across said bed to provide an impression surface, and pivotally mounted stop pawls having tapered surfaces thereon whereby as the spindles of said rolls move into operating position said spindles will engage said tapered surfaces to move said pawls out of the path o-f movement of said spindles, said pawls having recesses therein providing stop shoulders whereby after the spindles of said rolls have been moved past said pawls said conveyor may be moved in the opposite direction whereby the spindle of the roll to be disposed at operating position will move into said recesses in said pawls to engage said stop shoulders to be positioned at operating position.

26. In a duplicating machine, a bed having a gelatin impression surface thereon, a carriage movable over said gelatin impression surface for taking impressions therefrom and including ay carriage bar, a sheet feed chute adjustably moimted on said carriage bar, a carriage yoke pivotally connected to said chute, releasable means for holding said yoke in a definite position relative to said chute and bar, a grip roller rotatably mounted in said yoke, a substantially U-shaped frame pivotally mounted in said yoke, a platen roller mounted in said U-shaped frame, and a handle for pivoting said frame whereby said platen roller may be moved relative to said grip roller and said impression surface to apply a sheet passed through said sheet feed chute to said impression surface.

27. A duplicating machine including a bed having a gelatin impression surface thereon, a carriage, means supporting said carriage for movement over said bed and said impression surface, said carriage including a depending arm, a guide bar mounted at the side of said bed, a bracket mounted on said depending arm, and rollers in said bracket and arranged on opposite sides of a vertical plane through said guide bar and in diametrical opposition to each other and adapted to travel along said guide bar to rigidly iso?? 1 6 Laga-'zia holdthearriaga square Withsaidfimpres-, sion-:surface .1 28. A duplicating `machine including. a bed. haying. a; gelatin impressionv surface thereon, 5 a arriage. means supporting said carriagez onrmouement .over said bed and said= impression. surface',` saidcarrage including a def. pendingarm, a guide bar mounted at the side of vsaid bed, a sheathingprovdinga bearing 10 ,surfaceabout .said bar to'deaden noise and obviate the necessity. of lubrication, a bracket mountedon said dependinfgarm, and Irller's' in -said:bracket.and arranged on opposite. sides. of afvertical plane throughfsaidguide 15 ,bar andin diame-trcal yopposition` to VVeach other and adapted te travel along the sheathingaboutsaid guide harto rigidly.- hold ltheY arriage; square AWith said impression .surace. 203g JOHN J. FLANIGAN. 

